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Inverter system greater than 150kVA to 999kVA

You want to connect an embedded generation system (such as solar panels) greater than 150kVA to 999kVA.
Western Power offers a large range of connection services to a diverse range of customer groups and maintains a fairness policy for the management of applications to ensure an equitable service to customers. Like most industries, due to COVID-related impacts we’re currently experiencing supply chain constraints and delays. Additionally, an increase in market demand for construction and design service specialists means we’re working with limited and restrained resourcing to meet project needs, which has increased our regular times for scheduling/delivery of projects. We acknowledge these delays are frustrating and assure customers we’re working to improve wait times.

How much will it cost?

Enquiry fee - $3,500 plus GST.

Application fee- $5,000 plus GST .

Network studies fee - this cost may vary depending on the location of the installation and the network complexities.

How long will it take?

We will contact you within 3 business days with the invoice.

Application process

  • Enquiry

    The enquiry stage involves a high-level feasibility assessment, which usually determines whether there are any network impediments to the generator connecting. If there is sufficient hosting capacity we'll provide you with an application form.

  • Application

    Western Power will conduct various studies and prepare Technical Schedules for the generator.

  • Network studies

    Assess aspects like network steady-state flow, protection, power quality, and monitoring/control requirements. These studies will indicate whether any network augmentation is required.

  • Request to commission

    You'll nominate a 2-week period to complete your commissioning testing.

  • Request for Approval to Operate

    Assessment of your commissioning report, updated Technical Schedules and Technical Compliance Report.

Additional information you need to know

  • The services of a National Engineering Register (NER) engineer will be required to advise in general on the process to be followed, the system design, and the equipment to use.
  • Signing of a contract for network studies. Studies assess such aspects as network steady-state flow, protection and power quality. These studies will indicate whether any network augmentation is required.
  • If network augmentation is required, there will be additional costs for further assessment.
  • If no network augmentation is required, Western Power prepares the Technical Schedules (with customer input).
  • Following construction, the customer submits completed the Technical Schedules, a Technical Compliance Report (TCR) and a request to commission. If approved, permission to commission is granted.
  • Customer submits the commissioning results, and a request for Approval to Operate.
  • The site’s electrical retailer is required to submit an ETAF (Electricity Transfer Application Form) to Western Power and a service request to change the site’s meter to bi-directional (required regardless of whether the generator is exporting or not). These must be completed before an Approval to Operate can be released.

Standards, manuals and guidelines

Resources that provide the necessary information to enable users to comply with statutory requirements and obligations.


Ready to apply?

I've got my site map and single line diagram ready.

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Estimated time to complete: 10 mins

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